Implement graph-driven cascade delete and restrict on Diagram#1407

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dimitri-yatsenko wants to merge 14 commits intomasterfrom

design/restricted-diagram

Commits on Feb 22, 2026

feat: implement graph-driven cascade delete and restrict on Diagram

dimitri-yatsenko
and
claude
committed
Merge upstream/master into design/restricted-diagram

dimitri-yatsenko
and
claude
committed
fix: resolve mypy errors in codecs and hash_registry

dimitri-yatsenko
and
claude
committed

Commits on Feb 23, 2026

Commits on Feb 24, 2026